Attenuation Correction

correct_attenuation_hb	Gate-by-Gate attenuation correction according to [Hitschfeld1954]
constraint_dbz	Constraint callback function for correct_attenuation_constrained.
constraint_pia	Constraint callback function for correct_attenuation_constrained.
correct_attenuation_constrained	Gate-by-Gate attenuation correction based on the iterative approach of [Kraemer2008] and [Jacobi2016] with a generalized and scalable number of constraints.
correct_radome_attenuation_empirical	Estimate two-way wet radome losses.
pia_from_kdp	Retrieving path integrated attenuation from specific differential phase (Kdp).